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Record W2484116175

EXTRACTION OF ROAD NETWORKS USING PAN-SHARPENED MULTISPECTRAL AND PANCHROMATIC QUICKBIRD IMAGES

2005· article· en· W2484116175 on OpenAlexaffvenue
Ruisheng Wang, Yong Hu, Xinmei Zhang

Bibliographic record

VenueGEOMATICA · 2005
Typearticle
Languageen
FieldEngineering
TopicRemote-Sensing Image Classification
Canadian institutionsUniversity of New BrunswickUniversité du Québec à MontréalYork University
Fundersnot available
KeywordsPanchromatic filmCartographyHumanitiesGeographyMultispectral imageForestryRemote sensingArt
DOInot available

Abstract

fetched live from OpenAlex

Les methodes d'extraction routiere basees sur la classification multispectrale traditionnelle separent les routes des autres caracteristiques du sol selon les caracteristiques spectrales des pixels individuels. Pour faire usage des proprietes spatiales d'images satellitaires haute resolution, dans cet article, nous integrons l'information spectrale d'une image multispectrale a l'information spatiale d'une image panchromatique pour l'extraction routiere par une technique d'affinage global et un algorithme de reclassification basee sur les contours. Premierement, l'image multispectrale a faible resolution est fusionnee a l'image panchromatique a haute resolution. Ensuite, l'image affinee est classifiee pour determiner la classe de routes qui peut comprendre des objets non routiers. Les routes classifiees sont ensuite segmentees et reclassifiees a l'aide de l'information de la texture directionnelle de l'image des routes classifiees et de l'information sur les contours de l'image panchromatique. En utilisant la texture, le contour, la forme et la dimension, les objets non routiers, par exemple les petites entrees, les toitures des maisons et les parcs de stationnement peuvent etre enleves efficacement. Les evaluations de la qualite en milieu urbain montrent que l'integralite et la justesse des principales routes extraites quant a leur longueur sont meilleures que 90 % et 97 %, respectivement.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

How this classification was reachedexpand

Full frame machine prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.001
Version: metacan-v3-hybrid-931329e0061cValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Bench or experimental · Consensus signal: none
GenreCandidate signal: Empirical · Consensus signal: none
Teacher disagreement score0.009
Threshold uncertainty score0.017

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0000.001
Meta-epidemiology (narrow)0.0020.001
Meta-epidemiology (broad)0.0010.001
Bibliometrics0.0040.002
Science and technology studies0.0000.000
Scholarly communication0.0010.001
Open science0.0010.000
Research integrity0.0010.001
Insufficient payload (model declined to judge)0.0020.002

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.013
GPT teacher head0.244
Teacher spread0.232 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Classification

machine, unvalidated

Machine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.

The models applied no category: nothing in the taxonomy fit this work.
Study designBench or experimental
Domainnot available
GenreEmpirical

How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".

Quick stats

Citations14
Published2005
Admission routes2
Has abstractyes

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Same venueGEOMATICASame topicRemote-Sensing Image ClassificationFrench-language works237,207